Product Update - Valve
- Fixed the game and tools not launching on machines with 16+ CPUs.
- Fixed missing and incorrect music being played in the L4D1 campaigns
- Swamp Fever - The Swamp: Added additional self-terminating survivor-only blockers to the areas above the airplane wreckage to prevent players from skipping the airplane event. These blockers are killed once the airplane door is opened.
- Cold Stream South Pine Stream: Added a small blocker next to a crate near the military truck near mid-level to resolve a minor stuck spot.
- Fixed controller navigation in mutation menus
Oct 24, 2012
Product Update - Valve
- Fixed fire from incendiary ammo re-igniting itself and never burning out.
- New achievement: "Good Guy Nick - Plays games with free weekend players and helps them survive a campaign."
Oct 19, 2012
Product Update - Valve
- Fixed player movement using joystick settings when playing with keyboard and mouse.
- Fixed a secure convar warning when scrolling the mouse wheel as a player infected.
Oct 17, 2012
Product Update - Valve
- Enable controller navigation of menus to support Big Picture mode.
- Allow client menus to execute restricted client commands.
- Fixed special infected not catching fire if they were already burning from incendiary ammo.
- Hunter and Jockey won't be killed if slashed mid-leap by another infected.
- Infected damage applied to a Jockey rider is ignored for the Jockey and no longer passed on to the Survivor. This fixes Jockey victims being subject to double damage from infected attacks and instant incap from Tanks.
- Tweaked boss zombie spawn timing in Versus to prevent the Tank spawning as soon as the Survivors exit the safe room.
- Fixed the first maps in Dead Center and Swamp Fever not using the boss spawning rules for starting maps, which are more restrictive than other maps.
Product Update - Valve
- Allow custom radial menus to execute restricted client commands
Product Update - Valve
- Added new startup and connect warnings if the player has -insecure in the launch options
- Protected against a crash in infected ragdolls
- Added fallbacks to common infected spawning to prevent a common crash when population data is missing
- Fixed a bug that allowed malicious servers to execute restricted console commands on players
- Fixed a bug that allowed malicious servers to prevent players from executing console commands
- Fixed incorrect "Survivors Have Escaped" state for Player Infected when a scripted crescendo event is played after a successful finale escape.
- Update to Confogl mutation to fix a possible crash on team swap
- If you are receiving an "Error 55" while connecting to dedicated servers, please make sure to accept the Steam Beta update then restart Steam.
Product Update - Valve
Updates to Left 4 Dead 2 have been released. The updates will be applied automatically when your Steam client is restarted. The major changes include:

- Console commands update_addon_paths and unload_all_addons can't be used while connected to a server.
- Some custom UI's give the ability to change which add-ons are active from the in-game menu. Now those changes won't be applied until the player returns to the lobby or main menu.
- Melee weapon scripts can optionally define the HUD icon data inside the script, similar to other weapons. See golfclub.txt for a format sample.
- Fixed a rare crash in the Spitter attack.
- Fixed a rare crash in bot navigation involving ladders.
Product Update - Valve
Updates to Left 4 Dead 2 - Authoring Tools have been released. The updates will be applied automatically when your Steam client is restarted. The major changes include:

- Added handlers for two crash types that weren't getting picked up by our crash reporting system
Product Update - Valve
Updates to Left 4 Dead 2 have been released. The updates will be applied automatically when your Steam client is restarted. The major changes include:

- Added protection against possible memory corruption from oddly sized avatar images
- Added handlers for two crash types that weren't getting picked up by our crash reporting system
- Added dlc directories to whitelist for consistency checking
- Flagged whitelist.cfg, motd.txt and host.txt to not clobber local versions on updates
- Updated some translations
Product Update - Valve
Updates to Left 4 Dead 2 have been released. The updates will be applied automatically when your Steam client is restarted. The major changes include:

- Made all mutations accessible from the main menu

CRASH COURSE

Crash Course 1:
- Fixed survivors being able to climb into infected-only territory from the top of the white truck in the early alley.
- Survivors can no longer leave the map bounds near the riverfront.
- Closed off a shortcut method to bypass the howitzer event.

Crash Course 2:
- Survivors can no longer jump on the generators in the finale area.

DEATH TOLL

Death Toll 1:
- Moved car near the tunnel entrance away from the drooping traffic light, as standing on parts of the car near the traffic signal could put you into a permanently stuck position.
- Moved a traffic sign that allowed survivors to climb the drooping traffic light prop up to the top of the tunnel entrance.

Death Toll 2:
- Added an infected ladder leading in to the upper pipe in the large drain room.
- Survivors should no longer be able to cross the bridge-lowering event before the bridge has fully lowered.
- Survivors should no longer be able to access the infected-only areas toward the end of the level.
- Survivors should no longer be able to leave the playable areas of the map from the areas beyond the saferoom.

Death Toll 3:
- Added "Checkpoint" flag to the nav square at the end of the intro saferoom to prevent versus rounds from starting when survivors stand next to the door.
- Removed a nav square by the next-level saferoom door to prevent infected players from standing there to prevent the round ending.
- Tweaked saferoom level transition trigger brushes to prevent infected players outside of the saferoom preventing the transition.

Death Toll 4:
- Players can no longer access the right-hand corner just outside the starting saferoom. This is to address a permanent-stuck spot when the saferoom door is opened.
- Survivors can no longer climb over the van in the ally leading to the onslaught area, which allowed them to skip most of the level.
- Survivors should no longer be able to leave the map/enter infected-only areas outside of the onslaught even street.

Death Toll 5:
- Made the roof of the picnic area inaccessible to survivors. This resolves an invincible spot.
- Players can no longer jump on the electric box prop facing the water on the side of the lakehouse.

DEAD AIR

Dead Air 1:
- Moved a bookshelf in front of the window in the second interior area (before the ladder climb) to prevent players from skipping parts of the level.

Dead Air 2:
- Move the trailer below the office building out of jumping range to prevent players skipping the offices.

Dead Air 3:
- Moved the fence and fence-climbing props at the entrance to the construction yard further back into the alleyway.
- Several tweaks to the area near the construction yard to prevent survivors from setting off the barricade fire event before they enter the event arena.
- Boarded up a window in the construction yard to address survivors accessing an invincible area.
- Survivors should no longer be able to jump over the barricade.

Dead Air 4:
- Infected players should no longer get stuck climbing over the rubble that divides the start of the map from the balcony leading to the escalator side .
Dead Air 5:
- Fixed a visual bug caused by a cube map being hidden inside of a prop.

BLOOD HARVEST

Blood Harvest 1:
- Survivors should no longer be able to leave the map by jumping to the left toward the end of the rope bridge..

Blood Harvest 2:
- It is no longer possible for survivors to climb in the vent above the alarm room.
- Survivors can no longer stand on the horizontal pipes under the catwalk in the area following the alarm door event.
- The high pipes along the sides of the train tunnel are no longer accessible to survivors.

Blood Harvest 4:
- The roof of the starting safe room is no longer accessible to survivors..
- Survivors can no longer jump on top of the “Richardson Atlantic” building.

Blood Harvest 5:
-Removed some of the crossbeams in the hay storage building.

COLD STREAM

Cold Stream 1:
- AI infected can now access the roof of the watchtower.
- Survivors can no longer jump on top of the roof of the single-storey cabin at the far end of the area after the rope bridge.

Cold Stream 2:
- It should no longer be possible for survivors to jump up to the top of the tunnel entrance pipe near the start of the map.
- Survivors should no longer be able to jump over the fence on the bridge toward the end, skipping the barrel explosion event.
- Changed the M60 spawns into weapon_item_spawn to be more mutation friendly.

Cold Stream 3:
- The walls toward the back of the bridge (opposite of the direction players go to progress the level) are no longer accessible to survivors. This is to prevent survivors from getting into infected-only areas below the bridge, which they may not be able to escape from.
- Changed the M60 spawns into weapon_item_spawn to be more mutation friendly.

Cold Stream 4:
- Hooked up a quick conversation between the chopper pilot and the triggering survivor.
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